But surely my opponent is not going to play into this line. It is too simple and he can probably find a TN or even a better move. One can’t rely on books alone. A little investigation and a decent amount of imagination can show equally, or even better, alternate ideas.

If the purpose of the main line is for Black to gain a tempo by attacking the center with 7…c5, why does he have to wait for the intermediate moves of 6.Qh6 Rg6 7.Qe3? In other words, can Black play 5.Qxg7 Rg8 6.Qh6 c5 at this point? Not too many games with this sequence of moves. Is it because it is bad or because it is unknown?